Customization of a WordPress booking plugin in PHP

I need someone who is knowledgable in PHP and WordPress plugins to adapt and expand the capabilities of a paid WordPress plugin. The Plugin is called "Advanced Booking Calendar" ([login to view URL]) and serves as a booking plugin for hostels, hotels, B'n'Bs etc. I want to use the plugin to allow prospective volunteers to apply for a volunteering opportunity at the charitable project that I myself volunteer with. Check out the current capabilities of the plugin: [login to view URL] Check out the FAQs as well: [login to view URL] Check out the added features of the PRO Version: [login to view URL] The modifications that you will need to make to the plugin are as follows: 1. Block whole days for holidays, such that no booking is possible for those days. It should be easy to choose a period of time with a date picker which will be blocked in this way. These days should appear in the front end in the calendar in a different color (dark blue) and there should be a possibility to add a description about the period (whether we have holiday or a course - that description should appear in the calendar, ideally with a possibility to include a link to the booking page of the course). 2. Mark certain days as "Buddha day" or "Free day". These days are not checkin / arrival days but arrival before and afterwards is possible. Already checked in volunteers can stay or depart on these days. (Marked in the calendar as yellow) 3. These colors should appear with explanation in the legend. 4. When a volunteer does not show up we need the possibility to distinguish if it is a no-show or a cancellation. Just add another button with no-show, which is cancelling the reservation but with another status. 5. The rooms appear not in order. It should be ordered from 1 to 35 so that we can see the amount of free spaces easily. 6. Expand the analytics: - one year chart which shows the number of volunteers per month. - One year chart which shows the number of now shows per month - One year with the number of cancellations per month - Average duration of stay per year - Number of days between booking and cancellation/no show I will provide you with the (well-documented and well-programmed) source code of the PRO version of the plugin. The developers of the plugin estimated that it would take them 4 hours to implement these changes. I am listing the job here on Freelancer because a) I cannot pay the hourly rate that the plugin devs quoted and b) I need the work to be done ASAP and cannot wait until the plugin devs find the time to implement my requests. Please only apply for this job if you: - are confident you can implement the requested changes - can complete the job within 24-36 hours max - have a Freelancer rating of 4.5 or above and min 10 reviews - document your code well - are planning on staying on Freelancer for the coming year, so that I may book your services again in the future if changes need to be made to adapt the modifications to updates of the WordPress plugin Please send me an estimate of the time it'll take you to complete the job as well as a binding quote. Please also indicate clearly that you've read the whole job listing and understood it; else your proposal will go straight to the trash. All the best, Niclas